SCR vs EGR - The Combine Forum
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post #1 of 331 (permalink) Old 02-02-2011, 07:09 AM Thread Starter
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SCR vs EGR

Nebraska Test

8670 with SCR

http://tractortestlab.unl.edu/Massey/mf8670.pdf

Power Max: 290 hp
FUEL CONSUMPTION: 54,5 l\h

8670 with EGR (TierIIIA)

http://tractortestlab.unl.edu/Massey/8670_iegr.pdf

Power Max: 288 hp
FUEL CONSUMPTION: 60,1 l\h


Last edited by djrudy; 02-02-2011 at 07:13 AM.
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post #2 of 331 (permalink) Old 02-02-2011, 09:55 AM
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Originally Posted by djrudy View Post
Nebraska Test

8670 with SCR

http://tractortestlab.unl.edu/Massey/mf8670.pdf

Power Max: 290 hp
FUEL CONSUMPTION: 54,5 l\h

8670 with EGR (TierIIIA)

http://tractortestlab.unl.edu/Massey/8670_iegr.pdf

Power Max: 288 hp
FUEL CONSUMPTION: 60,1 l\h
I see your point but it's only half the story.
Yes, there is a significant improvement in fuel consumption but at those max power levels you also use 3% SCR fluid. DEF fluid costs about 4? times as much as diesel, so, that's a 12% of fuel cost added.
Net, net savings? Well, at best, zero.
And that's all farmers care about, maximize fuel economy (read costs), whatever air comes out of that is good enough for me.
Oh, and don't forget the PITA factor of handling DEF fluid.
Nebraska Tractor Test Lab will start to chart DEF fluid use this spring but I'm not sure the recently tested CIH tractors will be affected.

Don

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post #3 of 331 (permalink) Old 02-02-2011, 11:30 AM
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You can buy def for $4.50 per gal.
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post #4 of 331 (permalink) Old 02-02-2011, 11:35 AM
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You can buy def for $4.50 per gal.
How does that compare to your diesel cost?

Don
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post #5 of 331 (permalink) Old 02-02-2011, 11:36 AM
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I didn't know Massey had an Egr engine. I thought they were all scr e-3 .
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post #6 of 331 (permalink) Old 02-02-2011, 11:47 AM
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The last meeting I was at they told us we could buy def for 3.90 a gallon an its only going to get cheaper as more engines go that route.
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post #7 of 331 (permalink) Old 02-02-2011, 11:48 AM
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Same engine as the 8400 series. I hear most folks bought the e-3 engines, though. Of course, for interim Tier IV, SCR will be the only option.
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post #8 of 331 (permalink) Old 02-02-2011, 12:22 PM
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OH OH, should have done a little more research, well, any research, actually.
Phoned Agco, New Holland and UFA.
Price ranged from 0.90 to 1.50 a liter depending on container size.
Today diesel is 0.82.
So it looks like DEF will soon be very similar to diesel price.
Not 4X!
Wow, was I wrong!

Don
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post #9 of 331 (permalink) Old 02-02-2011, 12:32 PM
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Originally Posted by Don Boles View Post
OH OH, should have done a little more research, well, any research, actually.
Phoned Agco, New Holland and UFA.
Price ranged from 0.90 to 1.50 a liter depending on container size.
Today diesel is 0.82.
So it looks like DEF will soon be very similar to diesel price.
Not 4X!
Wow, was I wrong!

Don
Just scrub those numbers in the previous post, so then it's only a 3% increase in fuel cost, rather than 12

Bruce

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post #10 of 331 (permalink) Old 02-02-2011, 12:54 PM
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Just scrub those numbers in the previous post, so then it's only a 3% increase in fuel cost, rather than 12
Yeah, I could do that or even just bury the post.
Oh well and there's still the PITA factor.

Don

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